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This slightly simplifies the code.
>From 010c9738c2182d3e269c305fd97dbb498a5dc717 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Thu, 16 Jan 2025 11:23:54 -0800
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9
fmayer wrote:
> Seems like the root cause was an vectorizer bug, sent
> https://github.com/llvm/llvm-project/pull/120730 that fixes it.
This is landed, so from that side we could reland this.
https://github.com/llvm/llvm-project/pull/119225
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fmayer wrote:
Seems like the root cause was an vectorizer bug, sent
https://github.com/llvm/llvm-project/pull/120730 that fixes it.
https://github.com/llvm/llvm-project/pull/119225
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fmayer wrote:
I was working on this miscompile. I cannot give a reproducer right now, but the
following observations:
The generated IR is clearly incorrect (the `inbounds nuw`), of the form:
```
%x = alloca [12 x i32], align 16
[...]
%59 = getelementptr inbounds nuw i8, ptr %x, i64 -4
%wide.ma
fmayer wrote:
> > I had to do something very similar for CHERI downstream: We have to ensure
> > that all globals are precisely representable (which may require rounding up
> > the size+alignment) so you don't end up creating bounds that include
> > adjacent ones. The original patch from 2019
@@ -0,0 +1,194 @@
+//===- unittests/Analysis/FlowSensitive/SmartPointerAccessorCachingTest.cpp
==//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM
Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Ap
@@ -0,0 +1,134 @@
+#include "clang/Analysis/FlowSensitive/SmartPointerAccessorCaching.h"
+
+#include "clang/AST/CanonicalType.h"
+#include "clang/AST/DeclCXX.h"
+#include "clang/ASTMatchers/ASTMatchers.h"
+#include "clang/Basic/OperatorKinds.h"
+
+namespace clang::dataflow {
+
+na
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https://github.com/llvm/llvm-project/pull/111918
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error: too big or took too long to generate
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@@ -2406,12 +2406,55 @@ void
AsmPrinter::emitRemarksSection(remarks::RemarkStreamer &RS) {
OutStreamer->emitBinaryData(Buf);
}
+static void tagGlobalDefinition(Module &M, GlobalVariable *G) {
+ Constant *Initializer = G->getInitializer();
+ uint64_t SizeInBytes =
+ M
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@@ -2406,12 +2406,55 @@ void
AsmPrinter::emitRemarksSection(remarks::RemarkStreamer &RS) {
OutStreamer->emitBinaryData(Buf);
}
+static void tagGlobalDefinition(Module &M, GlobalVariable *G) {
+ Constant *Initializer = G->getInitializer();
+ uint64_t SizeInBytes =
+ M
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error: too big or took too long to generate
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https://github.com/llvm/llvm-project/pull/119739
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fmayer wrote:
> Remove functional pass
function pass?
https://github.com/llvm/llvm-project/pull/119739
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@@ -808,6 +808,10 @@ void Verifier::visitGlobalValue(const GlobalValue &GV) {
"visibility must be dso_local!",
&GV);
+ if (GV.isTagged()) {
fmayer wrote:
The codegen has "is section == precisely honor alignment"
```
Align DataLayout::get
https://github.com/fmayer updated
https://github.com/llvm/llvm-project/pull/111918
error: too big or took too long to generate
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fmayer wrote:
sorry, messed up the upload
https://github.com/llvm/llvm-project/pull/111918
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https://github.com/llvm/llvm-project/pull/111918
>From 3a962270521aa7b48b64e5ac5fa0edb900990023 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Thu, 10 Oct 2024 16:05:50 -0700
Subject: [PATCH 1/5] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
https://github.com/fmayer updated
https://github.com/llvm/llvm-project/pull/111918
>From 3a962270521aa7b48b64e5ac5fa0edb900990023 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Thu, 10 Oct 2024 16:05:50 -0700
Subject: [PATCH 1/5] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
fmayer wrote:
@pcc does this look better now?
https://github.com/llvm/llvm-project/pull/111918
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https://github.com/llvm/llvm-project/pull/118989
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@@ -25,3 +25,7 @@ attributes #0 = { mustprogress noinline sanitize_realtime
optnone ssp uwtable(sy
; RealtimeSanitizer pass should insert __rtsan_realtime_exit right before
function return
; CHECK: call{{.*}}@__rtsan_realtime_exit
; CHECK-NEXT: ret{{.*}}void
+
+; RealtimeSani
fmayer wrote:
Fails buildbot:
https://lab.llvm.org/buildbot/#/builders/24/builds/2791/steps/10/logs/stdio
```
-- Testing: 83950 of 83951 tests, 48 workers --
Testing: 0.. 10..
FAIL: Clang :: Preprocessor/has_builtin_cpuid.c (15996 of 83950)
TEST 'Clang :: Preprocessor/has_
https://github.com/fmayer approved this pull request.
https://github.com/llvm/llvm-project/pull/117187
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fmayer wrote:
> LLVM Buildbot has detected a new failure on builder
> `sanitizer-aarch64-linux-bootstrap-hwasan` running on `sanitizer-buildbot11`
> while building `clang-tools-extra` at step 2 "annotate".
>
> Full details are available at:
> https://lab.llvm.org/buildbot/#/builders/55/builds
https://github.com/fmayer approved this pull request.
https://github.com/llvm/llvm-project/pull/116302
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https://github.com/llvm/llvm-project/pull/111918
>From 3a962270521aa7b48b64e5ac5fa0edb900990023 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Thu, 10 Oct 2024 16:05:50 -0700
Subject: [PATCH 1/5] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
https://github.com/fmayer edited
https://github.com/llvm/llvm-project/pull/111918
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>From 3a962270521aa7b48b64e5ac5fa0edb900990023 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Thu, 10 Oct 2024 16:05:50 -0700
Subject: [PATCH 1/4] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
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https://github.com/llvm/llvm-project/pull/113979
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@@ -11,11 +11,16 @@ RealtimeSanitizer (a.k.a. RTSan) is a real-time safety
testing tool for C and C+
projects. RTSan can be used to detect real-time violations, i.e. calls to
methods
that are not safe for use in functions with deterministic run time
requirements.
RTSan consi
https://github.com/fmayer approved this pull request.
https://github.com/llvm/llvm-project/pull/113931
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https://github.com/fmayer closed
https://github.com/llvm/llvm-project/pull/112457
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fmayer wrote:
> I think this is the right change.
>
> What I don't understand, though, is why you were getting an assert failure
> before. (Which line is the assertion on that failed?) I would have thought if
> you don't dump the nested record, you just get less information. Apparently
> not
fmayer wrote:
> I would suggest a brief comment explaining the choice not to filter.
I'm not sure I understand. There wasn't a choice to filter before, there was
just the (incorrect) assumption that we don't have nested
`RecordStorageLocation`, leading to a crash.
https://github.com/llvm/llvm
@@ -764,11 +764,18 @@ void AsmPrinter::emitGlobalVariable(const GlobalVariable
*GV) {
const DataLayout &DL = GV->getDataLayout();
uint64_t Size = DL.getTypeAllocSize(GV->getValueType());
+ if (GV->isTagged())
+Size = alignTo(Size, 16);
fmayer wrote:
@@ -764,11 +764,18 @@ void AsmPrinter::emitGlobalVariable(const GlobalVariable
*GV) {
const DataLayout &DL = GV->getDataLayout();
uint64_t Size = DL.getTypeAllocSize(GV->getValueType());
+ if (GV->isTagged())
+Size = alignTo(Size, 16);
// If the alignment is spe
@@ -194,12 +198,43 @@ Some issues with flags can be debugged using the
``verbosity=$NUM`` flag:
misspelled_flag
...
-Disabling
--
+Disabling and suppressing
+-
-In some circumstances, you may want to suppress error reporting in a specif
@@ -194,12 +198,43 @@ Some issues with flags can be debugged using the
``verbosity=$NUM`` flag:
misspelled_flag
...
-Disabling
--
+Disabling and suppressing
+-
-In some circumstances, you may want to suppress error reporting in a specif
@@ -194,12 +198,43 @@ Some issues with flags can be debugged using the
``verbosity=$NUM`` flag:
misspelled_flag
...
-Disabling
--
+Disabling and suppressing
+-
-In some circumstances, you may want to suppress error reporting in a specif
fmayer wrote:
An example dump that is now possible but crashed before
https://github.com/llvm/llvm-project/pull/112457
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https://github.com/llvm/llvm-project/pull/112457
We have an internal analysis that uses them, and the HTML dump would
fail on the assertion.
>From 4264fe1dfed3fc54f339ad4a769d76158c5ee7d5 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Tue, 15 Oct 2024 17:
https://github.com/fmayer updated
https://github.com/llvm/llvm-project/pull/111918
>From 3a962270521aa7b48b64e5ac5fa0edb900990023 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Thu, 10 Oct 2024 16:05:50 -0700
Subject: [PATCH 1/4] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
@@ -764,11 +764,17 @@ void AsmPrinter::emitGlobalVariable(const GlobalVariable
*GV) {
const DataLayout &DL = GV->getDataLayout();
uint64_t Size = DL.getTypeAllocSize(GV->getValueType());
+ if (GV->isTagged())
+Size = alignTo(Size, 16);
// If the alignment is spe
@@ -764,11 +764,17 @@ void AsmPrinter::emitGlobalVariable(const GlobalVariable
*GV) {
const DataLayout &DL = GV->getDataLayout();
uint64_t Size = DL.getTypeAllocSize(GV->getValueType());
+ if (GV->isTagged())
+Size = alignTo(Size, 16);
// If the alignment is spe
https://github.com/fmayer ready_for_review
https://github.com/llvm/llvm-project/pull/111918
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https://github.com/fmayer updated
https://github.com/llvm/llvm-project/pull/112050
>From 78e91cb54bed6ee8deda61a054776bbd3102d79d Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Fri, 11 Oct 2024 14:28:59 -0700
Subject: [PATCH 1/2] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
https://github.com/fmayer updated
https://github.com/llvm/llvm-project/pull/112050
>From 78e91cb54bed6ee8deda61a054776bbd3102d79d Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Fri, 11 Oct 2024 14:28:59 -0700
Subject: [PATCH 1/2] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
https://github.com/fmayer created
https://github.com/llvm/llvm-project/pull/112050
It doesn't make a difference currently, but MTE globals are only
supported on Android, so that's the more natural target to use.
>From 78e91cb54bed6ee8deda61a054776bbd3102d79d Mon Sep 17 00:00:00 2001
From: Flor
https://github.com/fmayer updated
https://github.com/llvm/llvm-project/pull/111918
>From 3a962270521aa7b48b64e5ac5fa0edb900990023 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Thu, 10 Oct 2024 16:05:50 -0700
Subject: [PATCH 1/4] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
https://github.com/fmayer updated
https://github.com/llvm/llvm-project/pull/111918
>From 3a962270521aa7b48b64e5ac5fa0edb900990023 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Thu, 10 Oct 2024 16:05:50 -0700
Subject: [PATCH 1/3] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
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https://github.com/llvm/llvm-project/pull/111918
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https://github.com/llvm/llvm-project/pull/111918
>From 3a962270521aa7b48b64e5ac5fa0edb900990023 Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Thu, 10 Oct 2024 16:05:50 -0700
Subject: [PATCH 1/2] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20in?=
=?UT
https://github.com/fmayer created
https://github.com/llvm/llvm-project/pull/111918
This greatly simplifies the code, and makes sure no optimizations are
applied that assume the bigger alignment or size, which could be
incorrect if we link together with non-instrumented code.
>From 3a962270521a
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fmayer wrote:
> > > With the function effects warnings (as errors) activated, blocking
> > > functions cannot be called from non-blocking functions, and this is
> > > enforced at compile time. The purpose of this series of PRs is to
> > > introduce similar functionality into RealtimeSanitizer,
fmayer wrote:
> With the function effects warnings (as errors) activated, blocking functions
> cannot be called from non-blocking functions, and this is enforced at compile
> time. The purpose of this series of PRs is to introduce similar functionality
> into RealtimeSanitizer, so that it can
https://github.com/fmayer approved this pull request.
LGTM % vitaly's comment
https://github.com/llvm/llvm-project/pull/100937
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@@ -84,6 +84,75 @@ non-zero exit code.
#14 0x0001958960dc ()
#15 0x2f557ffc ()
+Run-time flags
+--
+
+RealtimeSanitizer supports a number of run-time flags, which can be specified
in the ``RTSAN_OPTIONS`` environment variable:
+
+.. code-block::
@@ -84,6 +84,75 @@ non-zero exit code.
#14 0x0001958960dc ()
#15 0x2f557ffc ()
+Run-time flags
+--
+
+RealtimeSanitizer supports a number of run-time flags, which can be specified
in the ``RTSAN_OPTIONS`` environment variable:
+
+.. code-block::
@@ -84,6 +84,75 @@ non-zero exit code.
#14 0x0001958960dc ()
#15 0x2f557ffc ()
+Run-time flags
+--
+
+RealtimeSanitizer supports a number of run-time flags, which can be specified
in the ``RTSAN_OPTIONS`` environment variable:
+
+.. code-block::
@@ -84,6 +84,75 @@ non-zero exit code.
#14 0x0001958960dc ()
#15 0x2f557ffc ()
+Run-time flags
+--
+
+RealtimeSanitizer supports a number of run-time flags, which can be specified
in the ``RTSAN_OPTIONS`` environment variable:
+
+.. code-block::
@@ -489,13 +485,7 @@ static DiagnosticIDs::Level toLevel(diag::Severity SV) {
DiagnosticIDs::Level
DiagnosticIDs::getDiagnosticLevel(unsigned DiagID, SourceLocation Loc,
const DiagnosticsEngine &Diag) const {
- // Handle custom diagnostics, wh
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@@ -84,6 +84,29 @@ void test_macro_expansion4() {
#undef MY_NULL
}
+template struct pear {
+ // If you say __null (or NULL), we assume that T will always be a pointer
fmayer wrote:
Thanks, otherwise this comment will only cause confusion.
https://github.co
@@ -84,6 +84,29 @@ void test_macro_expansion4() {
#undef MY_NULL
}
+template struct pear {
+ // If you say __null (or NULL), we assume that T will always be a pointer
fmayer wrote:
Sorry, the implication of my comment was: explain why in a comment, because
@@ -84,6 +84,29 @@ void test_macro_expansion4() {
#undef MY_NULL
}
+template struct pear {
+ // If you say __null (or NULL), we assume that T will always be a pointer
fmayer wrote:
why are we only testing one of those?
https://github.com/llvm/llvm-project/
@@ -84,6 +84,28 @@ void test_macro_expansion4() {
#undef MY_NULL
}
+template struct pear {
+ // If you say __null (or NULL), we assume that T will always be a pointer
+ // type, so we suggest replacing it with nullptr.
+ void f() { x = __null; }
+ // CHECK-MESSAGES: :[[@L
@@ -84,6 +84,28 @@ void test_macro_expansion4() {
#undef MY_NULL
}
+template struct pear {
+ // If you say __null (or NULL), we assume that T will always be a pointer
+ // type, so we suggest replacing it with nullptr.
+ void f() { x = __null; }
+ // CHECK-MESSAGES: :[[@L
@@ -84,6 +84,28 @@ void test_macro_expansion4() {
#undef MY_NULL
}
+template struct pear {
+ // If you say __null (or NULL), we assume that T will always be a pointer
+ // type, so we suggest replacing it with nullptr.
+ void f() { x = __null; }
+ // CHECK-MESSAGES: :[[@L
@@ -84,6 +84,28 @@ void test_macro_expansion4() {
#undef MY_NULL
}
+template struct pear {
+ // If you say __null (or NULL), we assume that T will always be a pointer
+ // type, so we suggest replacing it with nullptr.
+ void f() { x = __null; }
+ // CHECK-MESSAGES: :[[@L
@@ -84,6 +84,14 @@ void test_macro_expansion4() {
#undef MY_NULL
}
+template struct pear {
+ T x;
+};
+void test_templated() {
+ pear p = { NULL };
fmayer wrote:
Doesn't this need some `CHECK` or `CHECK-NOT`?
https://github.com/llvm/llvm-project/pull/1091
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Author: Florian Mayer
Date: 2024-09-13T15:01:33-07:00
New Revision: e1bd9740faa62c11cc785a7b70ec1ad17e286bd1
URL:
https://github.com/llvm/llvm-project/commit/e1bd9740faa62c11cc785a7b70ec1ad17e286bd1
DIFF:
https://github.com/llvm/llvm-project/commit/e1bd9740faa62c11cc785a7b70ec1ad17e286bd1.diff
Author: Florian Mayer
Date: 2024-09-13T15:01:33-07:00
New Revision: e1bd9740faa62c11cc785a7b70ec1ad17e286bd1
URL:
https://github.com/llvm/llvm-project/commit/e1bd9740faa62c11cc785a7b70ec1ad17e286bd1
DIFF:
https://github.com/llvm/llvm-project/commit/e1bd9740faa62c11cc785a7b70ec1ad17e286bd1.diff
Author: Florian Mayer
Date: 2024-09-13T15:01:27-07:00
New Revision: f885e02cf7cac1b08cab4cd526773420076029dd
URL:
https://github.com/llvm/llvm-project/commit/f885e02cf7cac1b08cab4cd526773420076029dd
DIFF:
https://github.com/llvm/llvm-project/commit/f885e02cf7cac1b08cab4cd526773420076029dd.diff
https://github.com/fmayer created
https://github.com/llvm/llvm-project/pull/108646
This reverts commit 90a2e0bb423629b7e70f4b91adb44851199dd5ea.
Reverting parent CL
>From 6bc1ea84e078d01546286e6443d761e2a685902d Mon Sep 17 00:00:00 2001
From: Florian Mayer
Date: Fri, 13 Sep 2024 14:02:14 -07
fmayer wrote:
This caused a UBSan violation:
```
[--] 1 test from ConfigCompileTests
[ RUN ] ConfigCompileTests.DiagnosticSuppression
Config fragment: compiling :0 -> 0x7B8366E2F7D8 (trusted=false)
/usr/local/google/home/fmayer/large/llvm-project/llvm/include/llvm/ADT/IntrusiveR
fmayer wrote:
LGTM, but would like @vitalybuka to also take a quick look.
https://github.com/llvm/llvm-project/pull/104741
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fmayer wrote:
super-nit: add `[sanitizers]` and remove `.` from commit message?
https://github.com/llvm/llvm-project/pull/107280
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https://github.com/fmayer approved this pull request.
https://github.com/llvm/llvm-project/pull/107280
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https://github.com/fmayer closed
https://github.com/llvm/llvm-project/pull/106758
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https://github.com/fmayer closed
https://github.com/llvm/llvm-project/pull/106624
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https://github.com/fmayer approved this pull request.
LGTM for the hwasan test.
https://github.com/llvm/llvm-project/pull/105754
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@@ -1,8 +1,9 @@
-// RUN: %clang_hwasan -Wl,--build-id -g %s -o %t
-// RUN: echo '[{"prefix": "'"$(realpath $(dirname %s))"'/", "link":
"http://test.invalid/{file}:{line}"}]' > %t.linkify
-// RUN: %env_hwasan_opts=symbolize=0 not %run %t 2>&1 | hwasan_symbolize
--html --symbols $
@@ -313,6 +313,14 @@ Limitations
usually expected.
* Static linking of executables is not supported.
+Security Considerations
+===
+
+AddressSanitizer is a bug detection tool and is not meant to be linked
fmayer wrote:
nit: maybe "its ru
fmayer wrote:
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https://github.com/fmayer approved this pull request.
https://github.com/llvm/llvm-project/pull/100937
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fmayer wrote:
Breakage looks related: https://lab.llvm.org/buildbot/#/builders/72/builds/265
```
FAIL: UBSan-MemorySanitizer-powerpc64le :: TestCases/Integer/bit-int.c (4716 of
4745)
TEST 'UBSan-MemorySanitizer-powerpc64le ::
TestCases/Integer/bit-int.c' FAILED ***
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